W3School TIY Editor

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style>
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

.header {
  text-align: center;
  padding: 32px;
}

.row {
  display: -ms-flexbox; /* IE 10 */
  display: flex;
  -ms-flex-wrap: wrap; /* IE 10 */
  flex-wrap: wrap;
  padding: 0 4px;
}

/* 创建两个并排的相等列 */
.column {
  -ms-flex: 50%; /* IE 10 */
  flex: 50%;
  padding: 0 4px;
}

.column img {
  margin-top: 8px;
  vertical-align: middle;
}

/* 设置按钮的样式 */
.btn {
  border: none;
  outline: none;
  padding: 10px 16px;
  background-color: #f1f1f1;
  cursor: pointer;
  font-size: 18px;
}

.btn:hover {
  background-color: #ddd;
}

.btn.active {
  background-color: #666;
  color: white;
}
</style>
</head>
<body>

<div class="header" id="myHeader">
  <h1>图像网格</h1>
  <p>点击按钮可更改网格视图。</p>
  <button class="btn" onclick="one()">1</button>
  <button class="btn active" onclick="two()">2</button>
  <button class="btn" onclick="four()">4</button>
</div>

<div class="row"> 
  <div class="column">
    <img src="/i/photo/shanghai.jpg" style="width:100%">
    <img src="/i/photo/wuhan.jpg" style="width:100%">
    <img src="/i/photo/beijing.jpg" style="width:100%">
    <img src="/i/photo/shenzhen.jpg" style="width:100%">
    <img src="/i/photo/shenzhen-1.jpg" style="width:100%">
    <img src="/i/photo/wuhan-1.jpg" style="width:100%">
    <img src="/i/photo/shenzhen.jpg" style="width:100%">
  </div>
  <div class="column">
    <img src="/i/photo/shanghai-1.jpg" style="width:100%">
    <img src="/i/photo/hangzhou-1.jpg" style="width:100%">
    <img src="/i/photo/shanghai.jpg" style="width:100%">
    <img src="/i/photo/shanghai-2.jpg" style="width:100%">
    <img src="/i/photo/wuhan.jpg" style="width:100%">
    <img src="/i/photo/shanghai-1.jpg" style="width:100%">
  </div>  
  <div class="column">
    <img src="/i/photo/shanghai.jpg" style="width:100%">
    <img src="/i/photo/wuhan.jpg" style="width:100%">
    <img src="/i/photo/beijing.jpg" style="width:100%">
    <img src="/i/photo/shenzhen.jpg" style="width:100%">
    <img src="/i/photo/shenzhen-1.jpg" style="width:100%">
    <img src="/i/photo/wuhan-1.jpg" style="width:100%">
    <img src="/i/photo/shenzhen.jpg" style="width:100%">
  </div>
  <div class="column">
    <img src="/i/photo/shanghai-1.jpg" style="width:100%">
    <img src="/i/photo/hangzhou-1.jpg" style="width:100%">
    <img src="/i/photo/shanghai.jpg" style="width:100%">
    <img src="/i/photo/shanghai-2.jpg" style="width:100%">
    <img src="/i/photo/wuhan.jpg" style="width:100%">
    <img src="/i/photo/shanghai-1.jpg" style="width:100%">
  </div>
</div>

// 声明一个循环变量
var i;

// 全宽图像
function one() {
    for (i = 0; i < elements.length; i++) {
        elements[i].style.msFlex = "100%";  // IE10
        elements[i].style.flex = "100%";
    }
}

// 两张图片并排显示
function two() {
    for (i = 0; i < elements.length; i++) {
        elements[i].style.msFlex = "50%";  // IE10
        elements[i].style.flex = "50%";
    }
}

// 四张图片并排显示
function four() {
    for (i = 0; i < elements.length; i++) {
        elements[i].style.msFlex = "25%";  // IE10
        elements[i].style.flex = "25%";
    }
}

// 给当前按钮添加活动类（高亮显示）
var header = document.getElementById("myHeader");
var btns = header.getElementsByClassName("btn");
for (var i = 0; i < btns.length; i++) {
    btns[i].addEventListener("click", function() {
        var current = document.getElementsByClassName("active");
        current[0].className = current[0].className.replace(" active", "");
        this.className += " active";
    });
}
</script>

</body>
</html>